861468643 has 8 divisors (see below), whose sum is σ = 984787712. Its totient is φ = 738212616.

The previous prime is 861468623. The next prime is 861468661. The reversal of 861468643 is 346864168.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 861468643 - 2²⁹ = 324597731 is a prime.

It is a super-2 number, since 2×861468643² = 1484256445744522898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 861468593 and 861468602.

It is not an unprimeable number, because it can be changed into a prime (861468623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18496 + ... + 45442.

It is an arithmetic number, because the mean of its divisors is an integer number (123098464).

Almost surely, 2^861468643 is an apocalyptic number.

861468643 is a deficient number, since it is larger than the sum of its proper divisors (123319069).

861468643 is a wasteful number, since it uses less digits than its factorization.

861468643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31521.

The product of its digits is 663552, while the sum is 46.

The square root of 861468643 is about 29350.7860712452. The cubic root of 861468643 is about 951.5095641830.

The spelling of 861468643 in words is "eight hundred sixty-one million, four hundred sixty-eight thousand, six hundred forty-three".